1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
otez555 [7]
3 years ago
13

A volume of 80.0 mL of aqueous potassium hydroxide (KOH) is titrated against a standard solution of sulfuric acid (H2SO4). What

was the molarity of the KOH solution if 12.7 mL of 1.50 M H2SO4 was needed
Chemistry
1 answer:
yaroslaw [1]3 years ago
3 0

Answer:

0.478 M

Explanation:

Let's consider the neutralization reaction between KOH and H₂SO₄.

2 KOH + H₂SO₄ → K₂SO₄ + 2 H₂O

12.7 mL of 1.50 M H₂SO₄ react. The reacting moles of H₂SO₄ are:

0.0127 L × 1.50 mol/L = 0.0191 mol

The molar ratio of KOH to H₂SO₄ is 2:1. The reacting moles of KOH are 2 × 0.0191 mol = 0.0382 mol

0.0382 moles of KOH are in 80.0 mL. The molarity of KOH is:

M = 0.0382 mol/0.0800 L = 0.478 M

You might be interested in
What term describes the process of lowering the boiling point of a hydrocarbon by exposing it to different environmental treatme
IgorLugansk [536]

Answer:

Cracking.

Explanation:

A chemical reaction can be defined as a reaction in which two or more atoms of a chemical element react to form a chemical compound. An example of a chemical reaction involving hydrocarbons is cracking.

Hydrocarbon can be defined as an organic compound that comprises of hydrogen and carbon only.

In Organic chemistry, cracking refers to the process of lowering the boiling point of a heavy, complex or long-chain hydrocarbon such as kerogens by exposing it to different environmental treatments such as hydrogen enriched catalysts, pressure or high temperatures, in order to produce smaller, lighter and more useful molecules (alkanes and alkenes) such as gasoline, diesel fuel, etc.

8 0
3 years ago
Why might a scientist repeat an experiment if she did not make a mistake in the first one? A) Scientists who repeat experiments
9966 [12]

Answer:

The correct answer is B) it helps to ensure the result are consistent and repeatable.

Explanation:

Scientist generally repeat an experiment if he or she did not make a mistake in the first one to compare the results of two experiment, if there is no difference in the result or values obtainted from the observation of two experiment. he or she become sure that experiment was done in a right way because if there is some error made when experiment was carried out then the result of two same experiment would be different.

3 0
3 years ago
the formula of calcium oxide is CaO. What is the formula of the ionic compound containing calium abd sulfate ions
sineoko [7]

Answer:

CaS

Explanation:

Hello!

In this case, since calcium's oxidation state when forming ionic bonds is +2 and sulfur's oxidation state when bonding those bonds is -2, for the required formula we write:

Ca^{2+}S^{2-}

Now, since they have the same charge number, we infer the ionic compound formed when they bond is calcium sulfide:

CaS

Best regards!

5 0
2 years ago
What is the correct name for (NH4)4P407?​
Snowcat [4.5K]

Answer:

Diammonium hydrogen phosphate

Explanation:

3 0
3 years ago
What mass of iron is produced from adding 80.0 g of iron(II) oxide (71.85 g/mol) to 20.0 g of magnesium metal? FeO (l) + Mg (l)
nadya68 [22]

Answer:

46.0g of Iron are produced

Explanation:

Based on the chemical reaction:

FeO(l) + Mg(l) → Fe(l) + MgO(s)

<em>1 mole of Iron (II) oxide reacts per mole of Mg to produce 1 mole of iron</em>

<em />

To solve this question we need to convert each mass of reactant to moles using its respectives molar masses in order to find limitng reactant. Moles of limiting reactant = Moles of iron produced:

<em>Moles FeO (Molar mass: 71.85g/mol):</em>

80.0g * (1mol / 71.85g) = 1.11moles FeO

<em>Moles Mg (Molar mass: 24.305g/mol)</em>

20.0g * (1mol / 24.305g) = 0.823 moles Mg

As moles of Mg < Moles FeO, Mg is limiting reactant and the moles of Fe are 0.823 moles.

The mass of Iron produced is:

0.823 moles Fe * (55.845g/mol) =

46.0g of Iron are produced

6 0
2 years ago
Other questions:
  • Which formula can be used to express the law of conservation of momentum, where p = momentum? pi = pf pi &gt; pf pi &lt; pf pi ≠
    10·2 answers
  • A liquid that occupies a volume of 9.0 L has a mass of 7.2 kg. What is the density of the liquid in kg/L ?
    10·2 answers
  • What are the differences between cholesterol and ergosterole?​
    7·1 answer
  • The ions Cr3+ and O2- combine to form the ionic chromium oxide. in what proportions do these ions combine to produce a neutral c
    10·1 answer
  • __________ is important to a system because each part of a system relies on the previous work of another part.
    15·2 answers
  • if 200.0 of copper (II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper?
    12·1 answer
  • Temperature and silica content determine the _______ of magma.
    5·1 answer
  • Kamal was on a picnic to Hatta with his parents and family friends. While playing, he collected some muddy water from the Wadi i
    6·1 answer
  • Write the chemical equation of the reaction in which the reactants are nitrogen (N2) and hydrogen (H2) and the product is ammoni
    15·1 answer
  • Put the elements in order from easiest to hardest to remove an electron. Ba,Be,Ca,Sr.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!